Title (de)

Title (fr)

Publication

Application

Priority

US 1098096 P 19960201

Abstract (en)

[origin: EP0788006A2] A light collection device (10) for collecting light from a source (13) and directing it to a rectangular surface, such as an array of pixel-generating elements of an SLM (15). A first array (10a) is comprised either of lenses or of holographic optical elements (HOE'S)(21), each of which directs light from the source to a different spot at an image plane. A second array (10b) of HOE's is placed near the image plane, and has an HOE (21) for each spot of light at the image plane. Each HOE of the second array (10b) directs the light from its corresponding spot of light to the surface to be illuminated, resulting in a number of superposed beams of light on that surface. <IMAGE>